Tool reveals facial expressions of common marmosets

How could a human mother tell that her child is upset? Humans can distinguish the meanings of facial expressions of our fellow species either explicitly through speech or implicitly by context.

Male giraffes are more socially connected than females

Although female giraffes have closer "friends" than male giraffes, male giraffes have more "acquaintances" than females, according to a new study by an international team that includes a Penn State biologist. The study demonstrates ...

Researchers shed light on the evolution of extremist groups

Early online support for the Boogaloos, one of the groups implicated in the January 2021 attack on the United States Capitol, followed the same mathematical pattern as ISIS, despite the stark ideological, geographical and ...

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